| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | duvet | Japan | Not commonly used, as traditional bedding like futons are preferred | 1 |
| 2 | duvet cover | Japan | Not commonly used, as traditional Japanese bedding typically consists of a futon placed directly on a tatami floor | 1 |
| 3 | duvet cover | Japan | Not commonly used, as traditional bedding often consists of futons and quilts that don't require duvet covers. | 1 |
| 4 | electric blanket | Japan | Less common due to traditional preference for kotatsu (heated table) for keeping warm in winter | 1 |